Improvement in weather-strips



UNITED STATES PATENT OFFICEo CHARLES A. WILHELMI, OF BOSTON, MASSACHUSETTS.

IMPROVEMENT IN WEATHER-S'il'llPS.`

Specification forming part of Letters Patent No. 171,334, dated December 21, 1875; application tiled December 2, 1875. I

To all whom it may concern:

Be it known that I, CHARLES A. WILHELMI, of Boston, in the county of Suffolk and State of Massachusetts, have invented an Improvement in the Construction o"Weather-Strip's; and I do hereby declare that the following is a full and exact description thereof,'refereuce being hadto the accompanying drawings Fig. 3; Fig. 5, a View, in perspective, showf ing the mode of attaching the iudiarubber or other elastic or yielding strip to the molding- Strip.

Like letters designate corresponding parts in all of the figures.

. Myinvention belongs to the classot' Weatherstrips in which a strip ot' india-rubber or equivaient soft elastic material is secured to a rigid molding-strip, to be attached to the door, sash, or casing; and the nature of my invention consists in the peculiar mode of' attaching the said elastic strip to the lnoldingstrip, substantially as hereinafter specified.

I attach the elastic strip A to the moldingstrip B at both edges c b of the said elastic strip, so as to make the same tubular; and in order to give as nearly a round or cylindrical form as possible thereto, (the best form to give the tube permanency and certainty of elasticity,) I first nail or otherwise secure one edge, a., to the edge ot' the molding-strip B, as shown at one end in Fig. 5. The strip is then bent round, and the other edge, b, thereof is nailed or otherwise secured to the inner side of the molding-strip, as shown at the other end in the same ligure. This edge fits into a rabbet-groove, c, in the side of the molding, so that its surface will be beneath or iiush with the inner side of the molding strip. This mode of attaching the elastic strip to the molding-strip constitutes the first feature of my improvement.

The second feature of my improvement consists in so attaching one edge, a, of the elastic strip A to the edge of the molding-strip B that it projects somewhat beyond the corner of the said molding-strip at one side, as shown at d in Figs. 1,2, and 3. This projecting edge turns into, and conforms to, the inner surface of the tube, and not only greatly increases the strength of the elasticity possessed by the tube on that side, but gives a lateral projection to the Whole tube more decidedly in that direction, causing it to hug closelyT to the casing, door, or sash against which it bears. I am thereby enabled to use an elastic strip much thinner and cheaper than without this projection, or add to the efficiency ot' the strip with the same thickness of' material. The first feature ot' my improvement, however, may be used without the second, as shown in Fig. 4, which is similar to Fig. 3, except that in it the edge a does not project, as in the former figure.

Fig. l shows how the elastic strip A is applied in my improved manner to the moldingstrip for double doors. The molding-strip B is to take the place of the ordinary lap-molding of such doors. Its peculiarity lies in makthe rabbet-groove c wider than for other vuses, and lapping the edge b of the elastic strip so much farther on the molding-strip. The edge a, also, preferably projects somewhat farther than for other uses, whereby the lateral elasticity of the strip is increased, sol as to close with certainty any space between the doors.

Fig. 2 shows the same mode of application as in Fig. l, only with asmaller and thinner elastic strip and smaller molding-strip, applicable to door-jambs for shutting the door against, and also to the sides of windowt'rames for the sashes to slide in contact with.

Fig. 3 shows a construction differing from that in Fig. 2 in having the rabbet-groove c inclined inward, instead or' parallel with the face ot' the molding, as in the former figures, so as to give greater lateral projection to the elastic strip, applicable especially to the bottom ot the upper sash of windows, to press against the lower sash. It is also. applicable to the sides of window-frames, and to door- 2. A weather-strip, hztving its elastic strip jainbs, the sanne as the construction shown in A attached to the molding-strip B, as de- Fig. 2. scribed, and one edge, a, thereof projecting What I claim as my invention, and desire to secure by Letters Patent, is-

1. A weather-strip, having its elastic strip A attached by one edge, @,to the edge of the November, 1875.

beyond the edge of the molding-strip, substantially as and for the purpose specified.

'- molding-strip B, and by the other edge, b, to CHARLES A. WILHELMI.

the inner side of the said molding-strip, sub- Witnesses: stantially as and for the purpose herein speci- J. S. BROWN,

fied. A. H. KNAPP.

Specification signed by me this 26th day of A 

